Gas or explosive engine.



PATENTBD APR. 2a, 190s.

L L. A. G. LETUMBE. l @Als 0R EXPLosIvB ENGINE.

APPLIOATION ILBD 00T. 15. 1901.

No MODEL.

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LEON `ABEL CELER LETOMBE, OF LILLE, FRANCE.

GAS OR EXPLOSIVE ENGINE.

SPECIFICATION forming part of Letterslatent No. 726,710, dated April 538, 1903.

Original application tiled June l, 1901, Serial No62,696. Divided and this application filed October 15, 1901. Serial No'. 78,671. (No model.)

To all whom it may concern:

Be it known that I, LEON ABEL CELEB LEJ TOMBE, a citizen of the Republic ofY France, and a resident of No. 6() Rue de Paris, Lille, in the Republic of France, have invented oertain new and useful Improvements in Gas or Explosive Engines, of which the followingis a specification.

This application is a division of my application Serial No. 62,696, filed June 1, 1901.

The invention relates to fou r-cycle engines, and comprises an organization of three cylinders, a central double-acting cylinder and two single-acting axially in line therewith and one at each end thereof, with their closed ends turned toward the central cylinder. The pistons of the three cylinders are rigidly connected, and the power is applied to a single crank-shaft located at one end of the se# ries of cylinders. The end cylinders act as slides, and their open ends being turned outwardly permit of coupling to their pistons any device or piece of mechanism which it may be desired to drive.

arranged and operated as to produce an effective explosion at each forward and backward stroke of the piston.

The invention also comprises a special construction and arrangement of sleeves for uniting the end cylinders to the central donf, ble-acting cylinder in such way as to per-m mit removal of the pistons without disturbing the relation of the rigidly-connected cylinders.

l have not shown distributing systems or mechanisms for supplying the mixture of air and gas to the cylinders ora means for lregulating them according to the load or .work being done, as these several operations may be accomplished by means of any suitable Wellknown arrangements' for that purpose. I should prefer, however, .to use the distributing system shown in the United States Patent No; 634,063or in my original applicatio of which this case is a division. l

The accompanying drawing is a longitudinal section showing so much of the engine as is deemed desirable to illustrate the invention.

M is the central double-acting cylinder,

The distribution' systems for the several cylinders are to be so and N P the single-actin g cylinders arranged at the ends thereof. M' N P are their respective pistons. They are maintained at fixed distances apart by means of hollow cross-bars K, preferably of cast-iron and acting as piston-rods. They and the pistons are held rigidly together'bya bar or bolt T, passing through them and having nuts r applied at its ends at theV outer faces of the pistons N and P'.

The packing for the piston-rods consists of long sleeves F, in which the cross-bars K slide, suitable packing rings or segments being employed. Each sleeve F has at one end a flange 6, by which it may be bolted to the cover or head 7 of thefend cylinder. The other endl of the sleeveis cylindrical and is introduced through a suitable stuffing-box 9 `in the head 8 of the double-acting cylinder.

5 f5 indicate voil cups screwed into the sleeves.

By removing the bolts securing the anges ofpthe sleeve, the heads 7 of the single-acting cylinders, loosening up the stuffing-box 9, and removing the nut-s r, aswell as the oil-cups,

it isapparent that by proper manipulation of the parts the sleeves F- may be forced into the double-actingcylinder. The cylinderheads and pistons may all be removed with- Yout disturbing the fixed relation of the cylinders.

The cylinders are maintained at fixed distances from each other by shouldered rods 5, passing through bosses 52 on the cylinders. The annular Vspace Abetween the cross-bar K ,annular Water-circulation chambers, and the connecting sleeves may be provided with similar chambers, as shown.

I claim as my inventionl. In a gas or explosive engine, the combination of cylinders arranged end to end, an

interposed sleeve entering the head of one passes interposed between the adjacent heads cylinder and having; a flange adjacent one of the cylinders and having ailange by Which end for attachment to one of the heads, and it may be bolted to one of said heads and a a Stuffing-box mounted on the other head and stnfng-box applied to the other head and l5 through which the other end of the sleeve through which the sleeve passes.

passes. In testimony whereof I have hereunto sub- 2. In a gas or explosive engine, the combiscribed my name. nation of cylinders placed end to end their LEON ABEL CELEB LETOMBE. pistons united by a hollow cross-bar and a Witnesses: lo tie-boltpassing through the cross-har and pis- A. STREISGUTTEN,

tons, a sleeve through which the cross-bar 1 L. MAY. 

